hi luigi. I expected coma in the photo (i have yet to get a coma corrector) this might explain the outer stars. i will go over what i did in processing and tell you what i did to see if we can't figure out how it got so much darker. from memory though it was roughly that dark when i moved it from DeepSky stacker to Photoshop, i think my act of trying to bring up the exposure might have affected the colour.
